APHA Standard Method for DBP Formation Potential

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Method synopsis

Standardized chlorination procedure to simulate drinking water treatment and quantify the potential for organic matter to form regulated disinfection byproducts under controlled conditions.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — Disinfection byproducts formed during drinking water treatment reveal an export control point for dissolved organic matter in a subalpine headwater stream (2022), Water research X. Implementations in other papers (listed below) may differ.

1. DBP formation potential testing
   Bulk samples were filtered at 0.45 μm and prepared for DBP-FP analysis according to standard method APHA 2017. Chlorine demand tests determined the dose of sodium hypochlorite that would achieve a residual chlorine concentration of 3-5 mg/L for optimal FP of each sample during a seven-day reaction period. Samples were dosed with hypochlorite stock solution and reacted in the dark for seven days at room temperature.
   Quantities: Residual chlorine concentration of 3-5 mg/L, seven-day reaction periodDuration: Seven days reaction time in dark conditionsConditions: Room temperature, dark conditions, samples filtered at 0.45 μm
   Equipment: 0.45 μm filters, sodium hypochlorite stock solution, Hach Chlorine Free & Total colorimetric test kit

Typical Equipment

• sodium hypochlorite stock solution
• Hach Chlorine Free & Total colorimetric test kit

Output Measurements

• DBP formation potential
• chlorine demand
• TTHM formation
• HAA5 formation

Papers Using This Protocol (1)

Species Studied With This Protocol

Places Where Used